Lathe-driver.



No. 815,659. I PATENTED MAR. 20, 1906.

, D. H. TEAS. LATHE DRIVER.

APPLIOATION FILED SIG-P112. 1904. I

Fi .2. W

Inventor UNITED. STATESqPATEN-T OFFICE.

DANIEL H. TEAsf OF'NEW HAVEN, CONNECTICUT, ASSIGNOR TO NiLEs- BEMENT-POND COMPANY, OF JERSEY o rr, NEW JERSEY.

LATH DRIVER,

To all whom it mazy concern: Be it known that I, DANIEL H. TEAs, a

' oitizenof the UnitedStates, residing at New provements in Latheon the centers of a double-head driving-wheel lathe, such lathes, as is Well known, presenting aface-plate contiguous to the outer face of each of the driving-wheels. These two face-plates are driven in unison, and driving-studs of one kind or another project from the face-plates to between the s okes of the driving-wheel's, thus inforcing t e r0-.

tary motion of the work, as is usual in lathework., The'drivers employed are usually arran ed with a view merely to the enforcement of t e forward motion of the wheels, though sometimes the drivers so engage between the spokes or so straddle the spokes as to in some egree prevent forward jumpling of the wheel as soft or low spots are reac ed by the turning-tools. v Driving-wheel tires as now. oftenemployed are rather hard, and the desire is to turn them uickly' with heavy cuts and rather coarse eeds, The strains resulting from the action of the tools are transmitted radially to the rather delicate lathe-centers on which the work is supported, and the lateral strains due to the action of thetool have a tendencyto spring the wheels and theaxles, as well as to impose additional strains upon the lathe-centers.

7 My improved latheedrivers are designed for use in turning'driving-wheels when on their axles and mounted on lathe-centers in theusual type of driving-wheel lathes, the delsign being to permit the heavy work of turn= ingto be accomplished with rapiditywithout excessive strain upon lather-centers or wheels or axle and with unusual accuracy. -l

r My improved lathe-driver will be readily understood from thefollowing description,

takenin connection with the accompanying drawings, in which-e.

. Figural s a ace e Of 1 s Of h a p sa d ng-wheel'lathe i c nne n it ing-wheel an ax he wear-- Specification of Letters Patent. Application filed September 1 1904. Serial No. 224,078.

Patented March 20, 1906.

pearing in vertical section and the wheel be I v drivers shown in connection lng carried by a pair of myimproved lathe v driversg'liig. 2, a side elevation of one of the with a portion of the face-plate and with a portion of one of the driving-wheels, the latter appearing in diametrica Fig. 1 ,Fig. 3, a vertical section of a portion section in the plane of line a of of the lathe-driver m the-plane of line a of Fig. 1, and Fig. 4 a perspective view of one of the drivers. a

In the drawings, 1 indicates the face-plate tire of the wheel; 5, a flange firmly bolted Iagainst the face-plate at a radial distance from the center of the face-plate corresponding substantially with the radius of the wheel, the rear face of this flange being preferably. serrated, so as to secure a better grip against the faceplate; 6, an arm projecting rigidly from the flange toward and fairly close to theouter face ofthe tire; 7 a recess in the end of the arm toward the tire, this recess being open toward the tire and also referably.

I open at its top and bottom; 8, a b ock, preferably of hard steel, sliding in the recess of the i arm and projecting outwardly therefrom and having a serrated face engaging the outer face of the tire, this block having such width relative to the depth of the recess that when 1 its front face engagesthe tire of the wheel its :rear face will be at some distance from the rear wall of the recess; 9, a taperin key fit:

ting 1n the arm to the rearof theb lockjand serving when ad'usted inwardly to set the I serrated face of t e block firmly againstthe side ofv the tire; 10, bolts passing through slots in the flange of the driver and serving to bolt the driver firmly to the face-plate 11', a clamp-bardisposed across the inner face of a one of the spokes of thewheel, and 12 a pair I of studs disposed radially inward from block 8 and having their heels anchored in the flange 5, these studs-straddling one of the spokes of the wheel and projecting through t e elamp-bar'and having nuts an washers exterior to the clam p -bar.

firmly secured to the face-plate in radial po- 7 r v 1 o 5 In applying and using this driver it is to be sitiontosuit 'the wheel to be dealt with, and i of the wheel is to come between thestuds.

The wedge is then to be adjusted in such manner that the face of the block will takea firm bearing against the face of the tire without laterally springing the work in any man ner. The clamp-bar is then to be applied and its nuts screwed up so as to clampthe wheel solidly between the clamp-bar and the block. A driver is of course to be applied at each of the two face-plates of a double-headed lathe, and it is highly desirable that each face-plate be provided with a plurality of the drivers, Fig. 1 illustrating a pair of the drivers disposed diametrically opposite each other, In doing the clamping the user may, if desired, adj ust the clamp-bar first and then apply the heavier clamping strain by driving the key so as to force theblock to its work. Again, the user may, if desired, first mount the work in the lathe upon the lathe-centers, as usual, and then secure the drivers to the face-plates. The bolt-holes in the flange for the engagement of bolts 10 are preferably slotted, as indicated, thus permitting the tangential shifting of the driver upon the face-plate to suit the osition of the spoke of the wheel, and the c amp-bar is preferably slotted, as indicated, so that it may be removed without the necessity for removing the nuts from the studs.

It will be manifest that when the work is mounted in a lathe in the manner indicated and the wheel clamped by means of these drivers the wheel becomes rigidly unified with the face-plate without straining the wheel or axle or bringin strains upon the lathe-centers, and it wil also be manifest that the strains due to the action of the turning-tools will be imposed upon the face-plates instead of u on the lathe-centers and axle.

The outer ace of the tire is continuous and substantially at right angles with the axis of the wheel, and the blocks 8 bear on this tiresurface and give the wheel asupport uite independent of the spokes. The bloc (s 8 being serrated and of hardened steel are capable of having their facial teeth forced into the metal of the tire, for even the hardest tires employed in practice are not sufliciently hard to resist the penetration of these teeth. The teeth thus get a driving grip upon the outer face of the tire. In practice it has been found that with a pair of driving-wheels on an axle mounted between the centers of a double-headed driving-wheel lathe and having a plurality of the serrated blocks forced against the outer face of each tire with suflicient force to embed the teeth of the blocks somewhat into the tire suflicient driving power is obtained to take from the tire the heaviest needed cuts and at seeds producin 'themodern characteristic b ue chips.

I claim as my invention 1. In a driver for use in turning wheels fast on their axle while supported on lathe-com ters, the combination, substantially as set forth, of an arm arranged to be secured rigidly to the face-plate of the lathe and to project toward the wheel, a block carried by the arm and adapted for movement to and from the wheel, mechanism carried by the arm for forcibly adjusting the block away from the face-plate and against the face of the wheel, and clam ing mechanism to be carried by the face-p ate and project through the wheel and engage its inner surface and clamp the wheel against the block.

2. In a driver for use in turning wheels fast on their axle while supported on lathe-centers, the combination, substantially as set forth, of a flange arranged to be rigidly secured to the face-plate of the lathe, an arm projecting ri idly from the flange toward the wheel, a bloc 1 carried by the arm and adapted for movement to and from the wheel, mechanism carried by the arm for forcibly adjusting the block away from the face-plate and against the face of the wheel, and clamping mechanism to be carried by the face-plate and project through the wheel and engage its inner surface and clamp the wheel against the block.

3. In a driver for use in turning wheels fast on their axle while supported on lathe-centers, the combination, substantially as set forth, of a flange arranged to be rigidly secured to the face-plate of the lathe, an arm projecting ri idly from the flange toward the wheel, a blocIr carried by the arm and adapted for movement to and from the wheel, mechanism carried by the arm for forcibly adjusting the block away from the face-plate and against the face of the wheel, and clamping mechanism to be carried by the flange and project through the wheel and engage its inner surface and clamp the wheel against the block.

4. In a driver for use in turning wheels fast on their axle while supported on lathe-centers the combination, substantially as set forth, of a flange arranged to be rigidly secured to the face-plate of the lathe, an arm projecting ri idly from the flange toward the wheel, a bloc 1 carried by the arm and adapted for movement to and from the wheel, mechanism carried bythe arm for forcibly adjusting the block away from the face-plate and against the face of the wheel, studs projecting from the flange through the wheel, and a clamp-bar at the outer ends of the studs to engage the inner face of the wheel.

5. In a driver for use in turning wheels fast on their axle while supported on lathe-centers, the combination, substantially as set forth, of an arm arranged to be secured rigject toward the wheel, a block carried by'the arm and adapted for movement to and from the wheel, a tapering keyvoarried by the arm for forcibly adjusting the block awayfrom.

the face-plate and against the face of the wheel, and clamping mechanism to be carried by the face-plate and project through the wheel and engage its inner surface and clamp the wheel against the block.

6. In a driver for use in turning wheels fast on their aXle while supported on lathe-centers, the combination, substantially as set forth, of an arm arran ed to be secured rigidly to the face-plate of the latheand to project toward the wheel and having a recess presentingtoward the wheel, a block carried in said recess and movable therein to and from the wheel, a tapering keycarried by the arm to the rear of the block for forcibly adjusting the block away from the face-plate and against the face of the wheel, studs projeoting rigidly from the face-plate through the wheel, and a clamp-bar dlsposed at the outer ends of the studsand arranged to engage the inner face of the wheel.

7.. In driving devices for use in turning tired wheels fast on their axle whilesupported betweenthe centers of a driving-Wheel lathe, the combination, substantially as set forth, of a plurality of driving blocks having serrated faces in contact with the outer faces of the tires, and means for forcing the blocks toward the wheels so as to embed the teeth of the blocks into the metal of the faces of the tires.

- DANIEL H. TEAS.

Witnesses 2' JOHN B. CoNNELL, O. OoNsELeEN. 

